Oct 13, 2023 · In open pit mining, there are several commonly used blasting methods as follows: Classification according to blasting delay time: simultaneous blasting, microsecond blasting, and millisecond blasting.

Nov 1, 2018 · In this paper, a hypothetical open pit copper mine is considered, which needs to produce 30 million tonnes of waste and 25 million tonnes of ore based on its annual planning. This mine works 340 days a year, on which the drilling and blasting operations can be carried out.

Feb 25, 2025 · Blasting, a critical operation in open pit mining, enables the fragmentation of rock for easier excavation and processing. It plays a vital role in optimizing productivity, reducing costs, and...

Apr 2, 2019 · Shallow hole blasting is mainly used for the production of small scale open pit mines or quarries, adit rock, tunnel excavation, secondary blasting, new open pit mountain bag processing, the formation of slope accessible single trench …

Jan 20, 2025 · Open-pit blasting is a cornerstone in modern mining, enabling efficient extraction of valuable minerals within the framework of safety and environmental standards. The process encompasses the whole cycle of work: planning, drilling, loading, execution, and material handling; it is a highly technical process that requires much attention to ...

Jun 1, 2018 · Drilling and blasting are the two most significant operations in open pit mines that play a crucial role in downstream stages. While previous research has focused on optimizing these...

Open Pits (NOP) ore Bench to optimize the blasting design parameters that can yield the required fragmentation size thereby reducing the shovel loading times and maximizing efficiency of the subsequent mining unit operations such as hauling and crushing.

Jan 31, 2023 · Open pit blasting is the operation of ore and rock that are stripped and broken into certain bricks by the chemical energy from the explosive explosion when loading mining industrial explosives and initiating equipment into the blast hole according to …

Sep 16, 2017 · In this work the GA used to propose optimal blasting operation pattern by consideration of good coverage with field and geo-parametric in open-pit mine.

Oct 1, 2024 · A hybrid finite-discrete element method is adopted to simulate the bench blasting in open-pit mining. 2D model with very fine discretization is considered to calculate the size of blasted blocks and obtain the best design.